Question

In triangle abc if angle a - angle b= 25 and angle b- angle c= 20 then find the value of angle a, angle b, angle c

Answer 1

Step-by-step explanation:

∠B=3∠A−25

∠A=∠C

Sum of angles of triangle = 180

∠A+∠B+∠C=180

∠A+3∠A−25+∠A=180

5∠A=180+25

∠A=41

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∠B=3∠A−25=3×41−25=98

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